2. Getting involved
  3. Standards Committees
  4. NAW
NA 119

DIN Standards Committee Water Practice

About NAW Projects Drafts Publications Documents withdrawn without replacement National committees European committees International committees
Draft standard [New]

DIN EN ISO 23697-2
Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023); German and English version prEN ISO 23697-2:2025

Title (German)

Wasserbeschaffenheit - Bestimmung von Gesamt-Stickstoff (TNb) in Wasser mittels Küvetten - Teil 2: Verfahren mit Chromotropsäure (ISO 23697-2:2023); Deutsche und Englische Fassung prEN ISO 23697-2:2025

Responsible national committee

NA 119-09-02 AA - Organic compounds  

Responsible european committee

CEN/TC 230 - Water analysis  

Responsible international committee

ISO/TC 147/SC 2 - Physical, chemical and biochemical methods  

Edition 2025-08
Publication 2025-07-11
Public enquiry period until 2025-09-11
Original language German , English
Price from 80.20 €
Read draft and comment Order from DIN Media
Table of contents

Contact

Ralph Dominik

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2570
Fax: +49 30 2601-42570

Send message to contact